This work describes the mineralogy of dolomite carbonatite occurring at the Newania carbonatite complex, Rajasthan, north-western India. The mineralogy records the textural and compositional features of magmatic and post-magmatic stages of carbonatite evolution. Ferroan dolomite is the principal constituent and displays variable degrees of deformation, ranging from brittle-to-ductile deformation regimes. Apatite exhibits textural and compositional evolutionary trends from early-to-late stages of carbonatite evolution. Two varieties of amphibole are reported for the first time from this complex, ferri-winchite and cummingtonite; the former is magmatic and the latter is metamorphic in origin. The columbite–tantalite-series minerals are columbite-(Fe), and their paragenesis evolves from composite grains with pyrochlore to individual crystals. Pyrochlore is magmatic with U–Ta–Ti-rich compositions and shows evolution from calciopyrochlore to kenopyrochlore, followed by alteration during late-stages of carbonatite evolution. Monazite and baryte constitute the post-magmatic mineral assemblage; the former is hydrothermal and crystallised after precursor apatite, whereas the latter is associated exclusively with columbite–pyrochlore composites. On the basis of the mineralogy of the carbonatite, it is concluded that the parent magma was generated by low-degree partial melting of magnesite–phlogopite-bearing peridotite.

这项工作描述了印度西北部拉贾斯坦邦纽瓦尼亚碳酸岩杂岩中出现的白云石碳酸岩的矿物学。矿物学记录了碳酸岩演化的岩浆期和岩浆后阶段的结构和成分特征。铁白云石是主要成分，并表现出不同程度的变形，范围从脆性到延性变形范围。磷灰石表现出从碳酸岩演化早期到晚期的结构和成分演化趋势。首次报道了该杂岩中的两种角闪石：铁温奇石和角闪石；前者是岩浆成因，后者是变质岩成因。铌铁矿-钽铁矿系列矿物为铌铁矿（Fe），其共生由与烧绿石的复合颗粒演化为单个晶体。烧绿石是富含 U-Ta-Ti 成分的岩浆，显示出从钙烧绿石到白烯烧绿石的演化，随后在碳酸岩演化的后期发生蚀变。独居石和重晶石构成岩浆后矿物组合；前者是水热的并且在前体磷灰石之后结晶，而后者仅与铌铁矿-烧绿石复合材料相关。根据碳酸岩的矿物学，得出母岩浆是由菱镁矿-金云母橄榄岩低度部分熔融生成的。